Pacífico Power Plant, Industrial building in Pacífico, Madrid, Spain

Pacífico Power Plant is a former Madrid Metro power station in the Pacífico neighbourhood, bounded by Granada, Valderribas and Cavanilles streets. Architect Antonio Palacios designed a set of independent buildings; the main one is a large rectangular engine hall holding three diesel engines and three substation commutators, with smaller attached blocks for accumulators, electrical equipment, offices and staff housing.

The plant was built after the 1921-1922 drought-driven supply restrictions pushed the metro company toward self-supply; Antonio Palacios designed the complex, licensed on 31 October 1922, and works finished on 20 March 1923. The first diesel engine entered service that summer, and the official inauguration with Alfonso XIII and Victoria Eugenia took place on 14 June 1924. It remained an active power station until the 1950s, and on 11 April 2013 it was declared a Bien de Interés Cultural.

The plant is one of the two sites of Andén 0, the Madrid Metro interpretation centre, together with Chamberí station. Visitors can see the three diesel ship engines that gave the building its name, and the name Pacífico comes from the nearby metro station and neighbourhood. The site was declared Bien de Interés Cultural on 11 April 2013.

Visits are possible Friday afternoons and weekends, with free guided tours available through advance registration at museosmetromadrid.es. Planning ahead ensures you secure a spot and can confirm available times.

The plant still contains its original 1923 diesel engines, alternators, and transformers representing complete industrial equipment from that era. This preservation makes it a rare example of unchanged machinery from the early electrification period.